6. Mechanical properties of molybdenum and its alloys
The production of molybdenum and molybdenum alloys to ensure good forming conditions and service life poses two major problems for the metallurgist: avoiding brittleness near room temperature and ensuring the highest possible hot mechanical properties.
6.1 Fragility near room temperature
The transition temperature of molybdenum is close to room temperature, with transgranular fracture in the ductile range, intergranular fracture in the brittle range, and mixed fracture in the transition zone. The low-temperature fracture facies of high-purity molybdenum shows a mixture of intergranular and cleavage fractures. The presence of these two fracture modes can be explained by the influence of grain boundary structure on grain strength. The joints of low-strength grains,...
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Mechanical properties of molybdenum and its alloys
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The price of molybdenum powder in 1992 was in the region of $15 to $20; manufacturing difficulties and the cost of milling considerably increase the price of rolled semi-finished products as the diameter or thickness decreases (figure
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